Zibo 737 altitude xchange on mcp

I am having trouble dialing un the mcp alititude setting. Sometimes I have to go back and then forward as every click is not changing the altititude on the mcp. The other dials works just fine. suggestions?

It’s best to take a relevant operation video and send it to us( [email protected] )To facilitate our analysis of the cause of the problem.

I sent a video yesterday

Received and forwarded to technical personnel.Thank you very much.

Also, I put the mcp into device test mode, when I turn the dial it shows the knob being turned in both directions…again, other knobs operate normally…so I do believe the bridge is the issue.

I have yet to receive any kind of reply from support.