i have accumulated way, way too many rectififier tubes for my csp2 and se84c+.  that and having gone to an older se34.1 (greatly modified by decware) which has solid state rectification for a main amp indicates that some tubes need to go.  i have for sale 6 bendix 6106,  2 gz 32 1 which is made for canadian general electric,  the other says miniwatt.  there are 2 5r4wga and two5r4wgb.  that is for starters.  these tubes were all purchased on ebay from sellers with 99.5% feedback or better.  and they all had testers which indicated good results.  i have used all these tubes and have been satisfied with their performance.  if you purchase from me and are unhappy due to performance return it for a refund less shipping.  contact me at 360 642 8853 or pm.  thanks,  don    open for discussion