Mike,

I have all the sizes of drill pieces you need, always use the a 1mm to set your hole and then use a finger tip drill piece holder to increase the hole to the required size.

has any one tryed thw 1.4mm x4 yet stuck on what pistons to use

Had gurnell pistons delivered this week 1.4 4 hole and 5 hole. Wish I had got a 2nd pair of 1.4 4 hole

I set mine up with 6 x 1.3mm holes and 35weight losi oil all way round and I really like it.

I want to give the tapered pistons a try just don't know what to get there's to much choice !

Poulter appears to be using 1.3 x 4 and 1.3 x 5 based on his setup sheets

Ghea - p dub racing are now doing big bore pistons too.

I am using the following shock setup on the 210 and it seems to work well on astro regardless of track conditions. I have also found that it lands very well off jumps and seems to settle quickly

Fronts
Pistons = Gurnell 4 Hole @ 1.3mm Tappered
Oil = TD 550
Springs = Dark Red or Yellow

Rear
Pistons = Gurnell 5 Hole @ 1.3mm Tappered
Oil = TD 500
Springs = Light Red

My full setups can be found on the TD website

David