No real solution, difference between the easy steering Ski-doo and “hard” steering Cat goes well beyond shock setup… not sure what makes the biggest difference but is due to geometry differences in the front suspension, rear suspension, steering system and chassis. I’d guess theres more leverage somewhere in the Ski-doo steering system, the steering is extremely light, but also extremely “twitchy”.
A ski with a shallower keel will turn easier, but it won’t turn as well. Again, you give, and you take. If you don’t think your sled steers hard I wouldn’t worry about it.