This may be an odd question but has anyone tried fitting a newer style snow flap onto the proaction sled? Not the molded plastic type like what's on the Apex but there's one sort of like the original one only it has ribs in it.They look like they'd fit right on but I'm wondering how long they are.It's getting harder and harder to find the flaps that came on my SRX's still in good shape let alone a decent blue one and these other ones are on eBay all the time.