JCB 3CX (1990 grey cab) hydraulic problem?

1) Struggle to raise front loading bucket on main rams when bucket has a load in it. Seems ok without any weight in the bucket. Have to rev engine quite high to get it to lift.

2) 1st and 2nd gear seem ok but the machine really struggles to move in 3rd and 4th. Engine will only rev to half max revs in these two gears but will go to full revs in 1st and 2nd.

Any help would be very much appreciated.