Vortek spring kit for model 48

Hello from sunny Australia, Im in the process of rebuilding my model48 Diana with new seals and a Vortex spring kit.After i fitted new new seals and spring the gun would not cock.

I removed the Vortex spring and reinstalled the original spring hey presto the gun now works . So i reinstalled the Vortex sring again to see what would happen.,same result the gun won't cock. . The next move was to measure the springs , the springs are very similar but the new Vortek spring has a black top hat installed. Where the old spring does not. I removed the black top hat reassembled the gun and now all good.

As a first timer at this my assessment of the instructions supplied with the Vortek kit may be a little light on. Currently getting an average of 790 fps with HN Baracuda..
 
My TO1 trigger Model 48 would not cock with the top hat on the spring either. Very disappointed in Votex selling a kit that doesn't fit. Should've gone with the NEW- ZRT Mag RWS-Diana 48 from http://www.airrifleheadquarters.com/catalog/item/251488/8533197.htm as they offer one for the TO1 trigger specifically. The coils on the vortec spring are thicker and as such won't compress as far as the original spring and ends up coil binding. I'm going to try and machine down the top hat thickness a little at a time until it works. Hopefully I don't screwup the top hat as I'm using a drill press to turn the top hat. lol But what the hey, I can't use it as it is now so no biggy. I know I'll never buy anything else from Vortec and will recommend people not buy their kits. Crutcherro1, I tried the trigger adj thing but it didn't help on the 48. I just like to add, the reason I'm pissed at Vortec is instead of maybe sending me a shorter top hat they just said to remove it. That's just bs!