Tube amplifier bad caps

Hey,

My integrated tube amp has been experiencing the symptoms of bad filter capacitors. Crackling in my amp is so bad on both channels that I'm afraid ALL of the filter caps will have to be replaced. Tube swapping and tightening the socket pins has had no effect so I'm lead to believe bad caps are the problem.
A pic similiar to the inside of my amp can be found here. Are the can caps or the axial caps what I should be looking at replacing? I'm confident I can do the repairs myself (purchasing caps, discharging old caps, soldering, etc.) since I'm afraid of what the price tag might be for such a repair by a professional repair shop.