Looking for a relatively inexpensive replacement, fork

Currently have leaking rebound dampener and no replacement available. The knob got hit hard and damaged the inner plastic adjuster.

What I have
26 inch Manitou Nixon Comp 145mm travel
1 1/8 straight steerer
510 mm / 20 inch atc measurement

Looking for a replacement fork with about the same atc spec that is decent and less that $350.

Thanks

Manitou Markhor;I have a 26" and 29" and they function adequately. Cost was about $225 each, but may be higher now.

the atc is to short on the 26” Manitou Markhor so can I safely use a 29” Manitou Markhor with a 26” wheel?