hi i have a 1991 honda cr125 and this bike is notorious for having a bad left crank seal. i have everything(flywheel puller, the seal, service manual) and i need some advice if any of you have had this bike(if you have switched from 2 to 4) and done this repair or anyone who has done a left crank seal. the manual helps but is vaigue on exactaly what i have to remove in order th get to the seal.and will the timing need to be reset? i dont want to make anyone mad by asking for info at a 4 stroke board while i ride a 2 smoke. just to let you know. thanks!!