What is the hardest/most difficult rifle action that you have taken down and re-assembled. The other day I dropped the falling block action out of my Ruger #1H Tropical. It came apart ok but after cleaning putting it back was a SOB. Normally I am very good with rifle workings but I had to go for the Excedren bottle on this one. I left a note to myself to forever more to clean the action only with gun scrubber and lube with spray oil on Ruger #1's. This should have been simple....but it drove me crazy. I am sure there are other brain stomper actions out there.