Good point Joe ...I could try and mill a little off the side of the grousers and leave enough that it doest break the plastic off..I have a few spares to do a little experimenting on...One thing for sure is that if my dad new that gregs D8 outpushed my TD 25 he would turn over in his grave ..He used to swear up and down that the 25c would do circles around the D9 ...No Offence Dirtpusher...lol 2 cents?