girth slippage

Harley darling.. The girth goes one hand's width away from your front legs. Ah, there we go.
*fifteen minutes of warm up longing later* ..
Harley, my dear, it's slid forward. *wiggle wiggle wiggle* >. there we go.
*ten minutes after riding him relaxed*
OOP! Saddle's sliding. *hop down* Ah Harley, Momma Loves you.. We're going to need to find a girth that stays put!


Help? I am using a wintec neopreney-looking girth. No elastic, no seams on the sides (had one with seams and it rubbed Romeo raw.. yuck).

Thanks