So a few months ago I was posting that I was having issues with my SVT-CL amp. Took it to the shop a couple times and no solution. Well 8 months later and a bunch of money spent I figured out one of my Mogami patch cables was bad. The reason it never clicked in my head before was I change my pedalboard setup for each show so sometimes it would be before my tuner that mutes the rig and sometimes after. Anyways, I decided to buy new power tubes for my backup SVT-VR. I took it to the shop and got everything set up but it was still making noise so I bought some new JJ's. I adjusted the bias but I don't know how to do the balance since I don't have a dummy load at home. What are the side effects if I don't adjust this for 6-12 months? Do I need to adjust it if the shop just did even though I changed my power tubes?