Looking at buying a pair of stock 1Bs in excellent condition. I'm guessing for these to be a worthwhile pursuit, I would need to have the capacitors and resisters re-placed as well as the tweeters. Or possibly just purchase new crossovers (with said new caps, etc). Is there a place or person to contact for drop in Crossover replacements for the 1B? I went to the VR3 site which has crossover mods for almost all SDA models 'except' the 1B (I did see the 1C so perhaps that is suitable?). Any thoughts appreciated. Or should I just pass on these?