Hi, Everyone, I was on here a few weeks ago and never had a chance to get back on here. Now I do. I am not sure of the year but the volume knob does pull out as someone asked me to check. I just had a little crackle now and then so I thought I would take it in for a tune up. Well Randy here in Fargo ND is the only guy that works on amps around here so I dropped it off and he recaped it and cleaned it. I took it home and never tried it out. I got in a bad Motorcycle accident when this woman pulled in my lane and we hit head on. I was layed up for over a year and finally wanted to play guitar one day. When I turn the reverb past five it sueal's so load its unreal. Called Randy and took it back in and he said he can't find the problem and told me to pick it up. I was not happy and let him know. Anyone got any ideas what it could be. The amp is like new and never had much use and no repairs done at all till now. Could sure use some help. Thankyou to all.