Tuning Anyone else having this issue with a gen 1 crown?

Hello all. 

I recently did some trading and got my old first gen FX crown back from the guy I sold it to. When I shipped it to him it only had a 30 cal 600mm barrel that came with it stock . when I got it back he had 2 other barrels that he had gotten and he had put the duel transfer port on both of them and on the 30 600 i gave him with the gun . it took all I had and a helper with a rubber strap wrench and a mallet to get the barrel out to try one of the others. I noticed that in order to get the barrels in the are way tighter than they should be. It will accept any of the older single hole brass ports but all 4 of my barrels with the duel port brass pieces will not slip in like they should. I can get them into my impact with no issues at all.

Thanks for any help you guys\gals can give . it dont know if it is safe to take the orings off the brass pieces and try some 2000 grit sand paperto take off a little material.



Dan 
 
Is the new one designed for a different size O ring?



+1

I had a very tight fitting barrel and the o-ring size is exactly what was causing the problem. Because the brass transfer ports are not the exact same size, the o-rings fit differently and cause a tighter fit. Try either the next smaller size o-ring or the same size o-ring but with a smaller rubber thickness. You’ll see, when you change out the o-ring, it should slide right in with very little friction...If that’s the problem! 😜

Good luck, Stoti