Harmonic balancer bolt

[Caminuvik]

Truck is becoming a pain in the A. Broken valve spring ( switched tanks, sputtered, back fired, ran like (censored) lucky to get home. Found one dead cylinder, removed valve cover found broken valve spring, bought an overhead valve spring compressor, leaked down compressor tester, and replaced compressor tester that died between cylinder tests on snowmobile rebuild (thought $1,000.00 down the tubes when "0" compression on the oversized rebuilt cylinder/piston that leaned out after check out run.)
Well on to the latest issuse, went to turn motor over by ratcheting on damper bolt, bolt turned with next to no torque on rachet, and that was all that turned!
Guess bolt is stripped? What to do? Find another 350? Can this be repaired? Or just push it over the bank and look for a different plow truck? Trying to finish building a house, so not a lot of time or space to play mechanic. Any suggestions would be appreciated. I have not had any luck with anything lately, and it's taking a toll. Thanks Cam