Yeah, speak to Laney.
It's going back 25 years or so, but I broke the spindles on three of the tone pots on my gigging amp - my fault, no question. I went to my shop, to see about how we'd get it fixed, he phoned Laney to enquire about parts and they sent them return post, with knobs, free of charge.
I've heard that all down through the years they've maintained a high level of service - give 'em a go, see what they say.