Was wondering if anyone has gone through the process of upgrading the cutter head of a Makita 2040 to a helical head and what are your thoughts? Is it worth the effort and cost? My cost investment in my 2040 is $100 for the machine, $350 for two new feed rollers, and about $150 for various parts that needed replaced due to the previous owners neglect (gears, chain, blocks, and the like).