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This tappet plate is unlike anything you have ever seen before. The length of the fin and advance on pickup timing will accomadate high rates of fire. The spring hook has been moved rearward yeilding high tappet spring rates while maintaining higher reliability over a cut tappet spring on a standard design plate. You may need to try several differnet tappet plate springs. Begin without cutting any coils.
-The size of this tappet has been fit to Retro Arms V2 shells precisely for minimum play. Far less then you will find with any other manufacturer. Consequently this will likely not work in any other gearbox shells.