Been looking for a big saw to do some limited milling and quartering of large rounds. Won't get a lot of use. Local guy has a Stihl 056 (not sure if it's AV or Magnum) and an 048. The 056 apparently has a bad 'ignition module'. I have not contacted the seller directly yet, I got the info on both saws from a mutual friend of both me and the seller. What might be a reasonable asking price on either of these saws, assuming that they are both in average condition and the 056 does indeed need something with the ignition replaced? I want to be prepared to negotiate if necessary before I call the guy.