I currently have a Terry Tailwind I often find I'm a lot slower than riders around me. I get dropped on rides most of the time. :/
I feel like I am spinning out of control whenever I shift. Is there a way to change this or is it just me?

When I went to the velodrome they had a 650c track bike for rent and I often found I was spinning out of control as well - they used the same track gearing as the 700c bikes. I am assuming this is the same reason for me spinning out of control on my road bike. The gearing for 650c wheels and not 700c?

I've been finding it hard to find advice at bike shops since I have only found shops have 700c. I'd get a 700c if I could touch the ground and there was no toe overlap.