I just bought a quad of ehx kt 88 tubes in my amp and they sound very good I mean really good, they do have the highs and mids of el34 and the low end of 6l6. But I ahve to remove orginal tube clam on the amp to put them in so now my question would be is it ok to do that and where can I find the tube retainer that will hold those tubes for the amp. If any canadian vancouver user is reading this can you tell me where you can buy those rentainer in vancouver