Just been playing and found that the orginal small bore schmacher springs fit these shocks right length and bore.
so have a new lease of life.
but My Yokomo BX spring are too big on the inner bore and are too long shame as i like the bright shinny Colours (If you know me and seen my cars you will now i run a right mismatch of Yoko and D4 shocks with different springs on my Cat)
colours same goes for the Losis springs
My pit box is starting to get so full of different springs that i don't want to buy any more, It's bad enought that i have to buy new springs for the Cougar.
Cheers you guys