Alright, replaced my mag mount Wilson 5000 with a nice 4-1/2" Breedlove puck mount and a Radioshack 102" SS whip and a roughly 4-1/2" spring. SWRs on a MFJ 259B were way off, lowest somewhere around 31-32MHz so I welded up a roughly 2-1/2" spacer that sits under the springs, for testing. (Spacer comprises of two stainless steel bolts welded head to head, with a washer welded onto the bottom bolt to spread the load on the puck.) SWRs are now lowest around low 30MHz IIRC, but still quite a ways off from 27MHz. Any suggestions? I can make a longer spacer, but this spacer is going to be ungodly long by the time I'm done, at the current rate. Right now, I'm around 1.8 flat through the 40 channels.