A local farm sale has what looks to be a nice IH model 155 pto driven manure spreader. Not sure how old this spreader is. Are they reliable and are parts still available for them? Does the pto drive both the apron chain and the beaters. We have a small farm and haul 25 loads per year with a really old John Deere N spreader( pto drives the beaters but apron chain is ground driven). Would like to get a better more reliable spreader without breaking the bank. Any feedback on what I should look out for with this spreader.