Not wanting to order a variable capacitor for a DIY tuner, I had an idea of use a 6+ pole rotary switch wired starting with a direct connection, bypassing the capacitor, then a 100pf cap, 200pf on the 3rd pole, etc. Maxing at 500pf. Now, I know this won't be as precise as a "real" air variable capacitor, but, I would think it's better than nothing. Just wanted to get some opinions on it from some people a bit more experienced than myself. Thanks!