How to fly a Spit 1a correctly!?

[Daliaraptor]

So, im flying now for quite few hours. As well in MP.
My problem especially in the ATAG Server, wehre you just can choose the Spit 1 and 1a, ive no chance to get a 109 even close in my gunsight. Even when i attack from above. I have the feeling its like David against Goliath. I doesent bring my Spit faster than 200mph at level flight (without momentum). Climbing as well is very confusing me. With the Spit 2a its the oposite. To easy to catch and chase a 109 and finally shoot down. But im getting frustratet with the 1a. Does i do something wrong? I've tryed a lot but the 1a feels like a Sopwith Camel WW1, without the good glider characteristics No Power!!!

Has somebody any tipps or is it just like it was, then?
Thanks for Feedbak...