I'm going to have to agree with swoop223. If repairs have been made already to these parts I would start to think to look else where.

You could try to recalibrate it again, the menu system is pretty straight forward, but maybe you forgot to save or something.

Also, consider getting a service manual for that machine. It will give you specs on travel rates for the mast lift speeds/tilt etc. Also it will give you engine rpms etc.

I'm not 100% sure on the mini levers, but I think when they are activated, they engage the solenoid fully, so you should be at max fluid throughput.

Anyhow, you can do some tests yourself and I would start with travel speeds at various engine rpms. I'll see if I can dig up some numbers for you on that machine spec wise.