08-08-12, 04:57 AM
Hard to say for sure. Heat distortion is a possible in some cases, I guess.
More likely is cack-handed re-assembly and/or failure to clean properly. If the end plate doesn't pull into place smoothly, don't force it - find out what's causing it to bind rather than apply load to the valve spindles.
More likely is cack-handed re-assembly and/or failure to clean properly. If the end plate doesn't pull into place smoothly, don't force it - find out what's causing it to bind rather than apply load to the valve spindles.