If you can post a pict of your pistols ramp and breech I might be able to give you some tips on feed issues and fixes. Surprisingly even good large scale manufacturers may overlook basic fit and finish points that can cause feeding problems. The photo below shows an optimal finish for performance and reliability and some basic operating dimensions. Most everything pictured can be done by hand with a little study and elbow grease. On the off chance, what type of magazine are you using?