Kalibrgun Colibri Indexing magazine problem Spring Mod (Fix)

I have one, but last year mine started to have indexing problems, I took out the indexing parts and now index mine manually. I only hunt, with mine so it is not a problem. The thing is so accurate & quiet . I just put the 2.5-15 Hawke Frontier LR Dot on mine and sighted in dead on @ 40 . I just got the scope today, hope to get it in the woods soon and see how I like the scope. 

Ernest Rowe has some helpful videos on the Colibri. http://www.ernestrowe.com/colibri

I have installed that spring mods in so many Colibri. a maro hole is drilled on the rotating lever that make contact to the mag index slots, then a shallow groove grinded on rear of pin for the spring. then cut a spring with proper spring tension to insure the spring reset the lever CCW when cocking bolt is closed/or after gun has been shot, shoot a whole mag to ensure consistency if not the spring need more tension.

yes, need to be drill on vice / drill press

Hey guys, had a couple of quick questions. First, arigato, when you say indexing problem, do you mean, the gun stopped indexing pellets when you cocked the gun or did you have it shooting semi-auto and Tha stopped working? Second is for Ernest...does this spring mod fix the semi-auto issues the Colibri had from the factory. In other words, does adding the spring mod make the Colibri shoot semi-auto like it was originally designed to shoot? If not, have you been able to make any of the Colibri's you've modded or tuned shoot semi-auto? Thanks guys 

Haven’t seen a simi- Auto Colibri just multi shot. So this mod is base on that.