Seeing as a lot of cap and ball revolvers suffer from short arbors..I did some research on how to fix them..I seen where a set screw could be threaded into the arbor chamber? :hmm: ..housing :hmm: /HOLE UNDER THE BARREL :grin: ! Also seen where a metal spacer was fixed to the end of the arbor. Well I think I got an easy quick fix that takes 0 skill and ends in a perfect fit. Here it is. This is what you need Drill 5/32" drill bit RELEASE AGENT JB WELD or Brownells Bedding compound PAPER TOWELS Q-TIPS .006 feeler gauge shim CLEAN AND DEGREASE ARBOR HOUSING #1.Remove rammer assembly #2.Drill 5/32 hole completely through center of arbor housing. #3.Put release agent on arbor ,and everywhere on outside of barrel that could possibly get over flow compound on it. #4.Plug 5/32 hole from outside with Q-tip(Use just enough pressure to barely keep Q-tip from falling out) #5.Mix JBweld,or brownnels bedding compound #6.Use straw and suck JB WELD OR Bedding compound up straw(Don't be an idiot,,just get enough to fill 1/2" -1" of the bottom of the straw.What ever it takes to fill the gap :headslap: ) #7.Hold straw end against something and squeeze out air pockets.. #8.Wipe outside of straw clean of any compound. #9.Carefully put straw into arbor housing. #10.Squeeze or blow compound into arbor housing.(KEEP BARREL POINTED DOWN :headslap: ) #11.Take handgun frame with cylinder installed and insert arbor into place ,,(put .006 shim between barrel and cylinder.)Point pistol up! #12.Push arbor completely into housing ,install wedge.,,,THE EXTRA COMPOUND WILL PUSH THE Q-TIP plug out and all extra compound will be forced out 5/32 hole.(Don't let it run all over gun) Keep gun pointed up after cleaning off all compound forced out of hole. I just did two revolvers (one Pietta and one Uberti,,One with JB weld and one with brownells bedding compound.Both guns came out perfect.