The cap vents just may be the answer here. I blow the little openings out on mine whenever I change the oil. That diesel and dust can clog them up quick.I use a rubber strap wrench on mine.I keep it under the seat. Rusty Anvil ,my Dad has had it about 12 yrs. He had a pace maker put in in '94 and has had several light strokes. He still manages though. If you would like to know more just tell me and I will send you a pm on his medicine and results. He(81) has had good results on the shaking with some of it. Bordercollie [&][&]