Try to get Audio grade capacitors...
Elna or Rubicon make.
Avoid any thing made in China.
Make sure to measure the quiescent current before and after the recapping process.
And also adjust the offset adj preset to null or zero "+/- 0" out any DC volt at the speaker output.
If you dont hav any allergy with Mr. Davinder Singh then he can be a good option. You purchase your capacitors from mouser.com with 20$ Shipping and 49% Duties and give all caps and resistors to him. This way,it will be easy and audio grade restortion.