Air in shocks

[S.A.W]

Hi,

I'm just building my shocks on a B4.1 Team as per the instructions. I'm also using a shock pump to get all the air out but once I've built them if I move the shock shaft in and out a few times it's just putting loads of air into the shock am I missing something.

This is my first off road and Associated but I never had a problem with air getting in on my TC.

Any tips please ?

Thanks.