Gs500k7

[Dave C]

Hello, I'm having trouble fitting new brake caliper pistons to my gs500 k7.
I bought rebuild kits for the front and rear calipers from wemoto and the pistons are bigger than the old ones and will not fit.
The old pistons measure 30mm front and 38mm rear. Wemoto state that the rebuild kits are 30.2mm front. I'm a bit confused as to whether someone has fitted the wrong calipers or I've been sent the wrong size pistons. I'd be grateful if anyone can shed some light on this please. Thank you 🙏