This might sound like a no brainer, but what is the correct size of the bolt that runs through the 1919 to mount it to the tripod. The reason I ask is that I bought a MG 42 AA tripod and adapter from ammunitionstore.com and I trashed the bolt it came with because the the mounting fixtures on the side of the gun were inproprely aligned when welded (it is an ORF gun). I fixed the situation by opening up the missalined piece so the bolt runs through smoothly. Only problem is I cant find a bolt to replace it! I have tried a few places without luck. The ammunitionstore.com has never returned an email for a request for another bolt. Have tried a 5/8' and 1/2' bolt with no luck. Any info appreciated.