For the bushing I think I'm going to install a thick felt washed against the bushing and soak it in oil so hopefully the clutch bushing last longer. Have not done it yet because I haven't researched it enough to find the drawbacks like getting hot and burning. In theory it should help.
What I do on clutches is ,,
Where the end of the bushing protrudes on some clutches on the ''sprocket'' end,, I take & file a small notch on the end of the bushing ''inline'' with where one of the oil grooves run on the inside of the bushing.
I then use a small R/C motor ect. oil bottle with the metal needle extension tip,, & put in a ''few drops'' of oil ''in the notch'' before ''every run'', using ''personally'' Syn. 20-50.
Rolling the clutch back & forth 360* ''slowly'',, helps get the oil in there also.
It works great for me doing it this way, haven't had any troubles,, & you don't have to take the clutch drum off every time you want to oil the bushing.
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