Looking at buying a 1982 zetor model 6945 [/]with 4600 hours; has KW loader; everything working except right brake pedal; tires very good; very little rust; have sent in bid for $7500 (Canadian funds); best I can find out this tractor is worth 12 to 15K at a dealership; thinking of increasing bid to $8000; any comments on value of this tractor???; need some opinions asap, Thanks, Greg.