Originally Posted by rocknroller529
hey lurker did you ever come to a conclusion about the blowback/spring issue?
I just got my replacement eigenbolt and techt spring kit in the mail this week. I currently have lurker's bolt paired with techt's heaviest spring from the kit (still noticeably lighter than the stock spring). I'll get air sometime this week and break everything in. I have new bolt guide orings to break in as well. I'm thinking I'll dry fire about three tanks and then I'll test with balls.
I'll update with results this weekend.
Might even throw a finger pinch test vid in for kicks.