ollie.v

hi ,im new to this page and am after some valued expert advice. i have had bassman 135 for about 15yrs. its been reconditioned several times ie,transformers diodes etc on numerous occasions ,as with all classic gear,its temperamental. but the real problem i have is trying to match the right valves with it for that original sixty's valve sound. when you purchase a quartet or (corner) of valves,they are all different and give the amp a different sound each time. do you have any recomendations please?