Hello everyone new to this board, it seems like a really great place for information from the worldwide combining community. We have a 1660 with 1900 hours on it and the injector pump is leaking oil down the timing cover. Has happened before with all new o-rings put in it. i ordered a new set but was wondering if there was something that may be worn or if its something that happens occasionally. Also i took out the rock trap this year as i felt it was reducing its capacity. The machine works the very best now 1 - 1.5 mph faster in barley, only now it doesn't have enough power has anyone turned their pump up? how much per quarter turn. thanks in advance