Finally finished my perfect glock. I had an issue where the gun wouldn't reset the hammer properly and I thought it was the ungodly mashup of WE/TM/Guarder/SRU tolerances. But, those weren't the problem. The real culprit was the 8mm bomber hammer bearing that everyone recommends. It was just simply too small to consistently contact with WE glock BBU. I switched it out for the stock WE 9mm bearing and it fired every damn shot.
Before I discovered this, I was about to slap the god-tier quality SRU slide onto a cheapo WE tan frame and call it a day, instead of the god-tier Guarder frame I bought. Thankfully I didn't have to do that and it remains beautiful.
With WE tan frame:
With Guarder FDE frame:
Quality difference comparison:
As you can see, the difference in quality is insane: the WE frame has a rough flat texture with a matte finish, whilst the Guarder has a smooth and slightly grainy texture with a beautiful glossy finish over it. Guarder also has the correct trades and not as horrifying seams.