Farfisa combo keyboard contact springs

Maybe your new Combo organ expert can point me in the right direction? I have a farfisa vip233 and some of the contact springs for the drawbars are messed up and need replaceing. Does syntar have a suitable replacement? I see the esq1 keycontacts are silmilar. We would have to measure o.d. on them. And i see the esq1 ones in the picture on your site has bumps on them where I dont recall the farfisa having that.