I have three renovators. Great machine. I use them so much that cost of parts has been an issue. Found replacement bearings for the blade shaft for $7 vs. $18 from Lesco. I make my own blades at $40 a set vs. $80 from Lesco. They are longer, thicker, and wider. Still reversable. Last more than twice as long and does a better job carrying a bit more momentum. I make my own drive chain for $5 vs. $30 by buy ANSI 35 chain in 10 ft lengths. Now researching specification on the v belt to find better price. Any help?