BRD -

Left drift is normal especially if youre first learning to hover. The faster you get airborne, the less you will notice left cyclic drift.

Lack of lift could be pitch setting (not enough positive pitch vs. headspeed) or pitch curve is wrong and needs adjusting.

Andy -

Does V1 control pitch curve and V2 control throttle curve? Which DIP switch locks/unlocks them? Where would the normally be set?

Also, the gyro has 4 wires. 3 wires are on one conn, which goes to RUDD. Where does the singe wire connect to?