yes, thanks guys! I know about the lever making it a closed system, what I have heard of is just flicking the lever gently without pulling it, to make any tiny bubbles trapped right at the top come out. Anyway, I went out last night to have another look and the lever seemed firm. Not 100% sure how firm it should be as it's a new bike to me, but felt ok. This morning same again. Maybe the first time I pulled it, there was a sticky caliper or something that then moved? No idea, but it's ok now. I went to change the pads and clean the pistons, but found out why the pads came with the bike. The retaining pins are stuck in at the moment, so I haven't touched anything. Will get some WD on the ends of them, and do a few rides and then have another go. Brakes working fine, but I dont think anything has been touched for a while so it will need a good going over once the pins are free.