Looking for element-to-boom clamping blocks for a Mosley PRO57 Yagi. Anyone got a twisted one with good blocks? Before anyone writes and tells me that I can get them from Mosley: yes, I know. Trying to save a few $$. TIA -Jim -- TR7/RV7, TR6/RV6, T4XC/R4C, L4B, NCL2000, SB104A, R390A, GT550A/RV550A - all vintage, all the time!