Does the resistance vary as you move things around or just over time with the leads held steady? I can't imagine a scenario (with a GOOD coil) in which the resistance should vary much at all either over time or by moving the wire around...
If the coil has a finite capacitance, then you should see the resistance change a bit over time as that capacitance charges up, but the measurement should settle out to a stable value after a short time.
'01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, jetted, K&N
'01 Polaris Scrambler 400, K&N
'02 Honda 400ex, Big Gun pipe, jetted, K&N, Lonestar +2 A-arms, Lonestar anti-vibe
'02 Honda 400ex, DiamondJ +3 A-arm widener, Lonestar anti-vibe