T337B Gear question/issue

[atsiii]

Hi all,

It appears that the downlocks on my T337C are not retracting (or are not staying retracted), so when I put the gear down, the downlocks are getting shoved back out of the way by the struts which is causing some abnormal wear and--I think--some intermittent hesitation. From the service manual it looks like the downlocks should remain fully retracted by virtue of return flow from the main actuator. But instead they are popping back out enough that the struts are shoving them out of the way, before they pop back to lock. We have already cleaned and overhauled the check valve, so does this point the finger at the priority valve in the power pack? Any insights appreciated!

Thanks in advance,

Allen