Hi Douglas
Thanks for contacting the Answer Army to post your questions.
There is no adjustment available at the consumer level. The unit needs to go to an authorized service center for check out and evaluation of the problem. As for the marks on your driveway, there are non-marking skid plates available part number 532435951.
Thanks again from the Husqvarna Technical Services Team
Hi Douglas
Thanks for contacting the Answer Army to post your questions.
There is no adjustment available at the consumer level. The unit needs to go to an authorized service center for check out and evaluation of the problem. As for the marks on your driveway, there are non-marking skid plates available part number 532435951.
Thanks again from the Husqvarna Technical Services Team