I was all set to do some post hole drilling on my bad 9n then found the bad leak at the lift arm mount . I am pretty sure one must remove the trumpet to be able to tighten the two bolts . Question is it possible to tighten them by using a inpact air gun ? One i know has a cotter pin threw a crown or castle nut . so that one probably won't tighten .So i put the 9n in the project for some other time garage and put the post hole digger on the 8n . If there are any tricks to tighten those two bolts ( one the axle for lift are and the other casting mount smaller bolt .Please let me know ...also How bad a job is it to remove the trumpet to get at those bolts in case i have to do the job the right way ?