Yes is the short answer to soaking in cleaner overnite. The best way to clean them is take them completely apart after soaking them. A vibrsonic cleaner will finish them off nicely. Try to keep all the differant parts seperste. Assemble them and pop test them. Shim as needed to make 1900 lbs. Shims are hard to sourceand each 1 thousands shim makes 50 lbs increase or decrease in pressure. This is a big job and if its your first time expect some problems. Ask here about them. We have several locations all over the us that will clean and pop test them for you. Just ask..