In dire need of help pertaining to our Bobcat 873 unit. Being in a rural area we have no dealer with exception of over 200 miles away. We have had (3) so called diesal mechanics that has misdianosed unit and have already spent over a $1000. The parts we need are fuel cap, muffler, air filter housing, key switch, possible turbo, and rebuild kit. The turbo was recommended from one mechanic, but not the other. The build kit, the same. The problem we had was, the unit sit for roughly 8 months then went to use unit and very hard to start, when running the unit would have alot of black smoke, then when increasing throttle, unit dies out and will not start back. We was told there was oil from the unit where the muffler goes. The unit is a 2002 with about 2000 hours, was purchased brand new and ran fine uo until the above problems. Any help is more than greatly appreciated. Looking for any companies that sell aftermarket parts and any gurus with knowledge or recommendations. Thanks in advance