Sir; Grease is about $2.00 a tube.. the pins are about $6.00 each... If you wear out the bushings, its machine shop time.......$$$$$$
Grease is cheap, cheap, cheap. You do not need to use a lot of grease, just a few squirts will do. If the Grease cert will not take the grease, then find the cause and fix it.
I'm old enough to rember the Wix guy on TV... He was holding a filter and stating "pay me now, or pay me latter"
I would invite anyone to come to my store and we can go out to the machines in the back that are in line for service... All kinds of machines, green ones, orange ones, yellow ones, red ones, big ones and little ones... I can show you the differance in a machine that has had a little T.L.C. and one with the same hours on it that has not seen a grease gun, a wrench, nor an oil filter.. Big differance in the price of repairs ($$$), trade in value ($$$), and coustomer satisfaction. virgil