Mr Jha is into repairs only. He does not do recapping or restorations as he does not have access to quality capacitors or other parts.
I would advise you to make a list of parts needed and order from mouser or there are restore kits for your model available on ebay. Order those and then approach Mr Jha. I have no idea about the quality of caps in the kit available on ebay.
To get the best out of the amp, its better to make a list ans get good parts.