Hi mjbilbo; The C5 is a nice old saw , what type of chain are you running on it.? In hardwood here in the Maritimes I could not expect to run a 29 inch bar with full comp chain of any kind,skip chain barely. The clutch even a new one would slip unless you just let the saws weight do the cutting with a nice sharp chain. Now a C9 would handle that 29 in. bar better with a six shoe clutch but that is not what you have.
What do you use your saw for most of the time,fire wood or logging and do you really need a 29 in. bar?
Pioneerguy600
Baileys calls it a semi chisle or micro chisle 404
I use it for firewood and like the longer bar as I have access to a lot of cottonwood here and it is not uncommon to have 30" logs to contend with. My saws with shorter bars will cut them but they end up looking like a Honeybaked spiral cut ham as I am always seeming to get that cut going sideways at the end somehow. I am always looking for some excuse to find another saw, so maybe a C-9 would be a good possibility with the better clutch. I have a Jonny 111S here with a 24" bar that a friend loaned to me and that one has no clutch issues at all.