Yes I chucked those parts lightly with no problems. Also no problem so far with the light coating of grease on the valve return spring. I had a hunch that it may have been vibrating kind of like the spring in a spring air gun during the shot cycle. The inside edges of each end of the spring had sharp corners where it was ground flat. I gently tapered these using a conical Dremel type Stone at slow speed in my cordless screwdriver. I thought this would help the spring sit on the plastic valve body better without causing stress concentrations. The small aft end of the valve is essentially a guide for the return spring. So far no problems. I did not put any grease on the valve face or valve pin shank.
I purchased a bunch of O-rings from
www.theoringstore.com and got great service. Other threads have mentioned
www.oringsandmore.com, but I don't have experience with them. I got all the sizes from the schematics which are also available from Edgun West's website.
Here is my order list with application, for Edgun R5M and Leshiy Classic. My plan is to get some divided fishing tackle boxes to organize these with labels for where they go in each rifle, kind of like ready-made kits you can get from places like Captain o-ring.com.
for Edgun R5m (.25 cal) & Leshiy Classic (all calibers), as noted
Quantities are higher than needed because of minimum order quantities from this vendor
QTY x Cross Section Dia. x Inside Dia, material, size notation, total cost, application
15 x 1mm CS X 3mm ID (NBR) Buna-N 70 Duro Metric O-Ring (N1.00X003) = $1.050, for R5m & Leshiy inner valve stem bushing
10 x 1.78mm X 2.57mm (NBR) Buna-N 70 Duro Metric O-Ring (N1.78X002.57 - same as standard #-005) = $0.500, for all fill cap check valve screws
12 x 1.5mm X 5mm (NBR) Buna-N 70 Duro Metric O-Ring (N1.50X005) = $1.080, for fill probe, regulator piston small end, R5m regulator adjusting screw, Leshiy plugs
12 x 1.5mm X 8mm (NBR) Buna-N 70 Duro Metric O-Ring (N1.50X008) = $1.080, for R5m regulator piston large end
12 x 1.5mm X 9mm (NBR) Buna-N 70 Duro Metric O-Ring (N1.50X009) = $1.080, for Leshiy regulator piston large end
16 x 1.5mm X 22mm (NBR) Buna-N 70 Duro Metric O-Ring (N1.50X022) = $2.400, for R5m magazine
20 x 2mm X 6mm (NBR) Buna-N 70 Duro Metric O-Ring (N2.00X006) = $1.800, for R5m .25 cal breech (use 4.3x2.4mm for 0.177 cal; 5.3x2.4mm for 0.22 cal)
10 x 2mm X 18mm (NBR) Buna-N 70 Duro Metric O-Ring (N2.00X018) = $1.300, for Leshiy regulator face to valve body face
10 x 2mm X 29mm (NBR) Buna-N 70 Duro Metric O-Ring (N2.00X029) = $2.200, for Leshiy moderator end cap
10 x 2mm X 33mm (NBR) Buna-N 70 Duro Metric O-Ring (N2.00X033) = $2.400, for R5m moderator end cap
12 x 2.5mm X 5mm (NBR) Buna-N 70 Duro Metric O-Ring (N2.50X005) = $1.080, for all pressure gages
10 x 2.5mm X 8mm (NBR) Buna-N 70 Duro Metric O-Ring (N2.50X008) = $1.000, for R5m transfer port
10 x 2.5mm X 8.5mm (NBR) Buna-N 70 Duro Metric O-Ring (N2.50X008.5) = $1.000, for Leshiy breech, all calibers
10 x 2.5mm X 12mm (NBR) Buna-N 70 Duro Metric O-Ring (N2.50X012) = $1.200, for Leshiy regulator small OD
10 x 3mm X 6mm (NBR) Buna-N 70 Duro Metric O-Ring (N3.00X006) = $1.300, not used for R5m or Leshiy
10 x 3mm X 18mm (NBR) Buna-N 70 Duro Metric O-Ring (N3.00X018) = $2.500, for Leshiy rear cylinder plug & regulator large OD
12 x 3mm X 25mm (NBR) Buna-N 70 Duro Metric O-Ring (N3.00X025) = $4.200, for R5m fill block, valve block, & regulator OD
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