Thanks again for going to the trouble of posting info.
I don't think either of those tyres would handle the Sticky n greasy dog-bog type clay here,they would just be plastered up all smooth and even.
I need a more aggressive tyre for the front with sideways bite into the turns.
This is what I have found so far.
The X-Drive(like the razors) have little bite.
Changed to the F1 and it was noticeably better,due to the aggressive shape,angle of the tread knobs.
I think I'll be getting the next larger size up F1's for the front's,to gain a bigger footprint.Will take note and report back results.On the rears I was using the Dirt Devils,good mix-balance- of grip and traction break for the rear end steering.