RE: Tuning problems
I hope your Magnum 40 works out better than my .46 did. I bought that thing 15 years ago to save $20 and never could get it to run properly. I exhausted my ingenuity then, came back 12 years later with 2 engineering degrees and still couldn't get it to run well. Frustrated every expert at the field one day with it.
I'm chalking my trouble up to a faulty/porous casting or a cracked something or another that I cannot see. I spent $114 on an OS 46 AX and have not looked back.
Best of luck, but sometimes they are just bad.
N