I have flown LE UL P-81 for about 60 hours and LE XL B-69 for about 160 hours with solid link in landing gear to save weight. I have now changed both machines to spring links in landing gears. It is the only way to go and i highly recommend the springs. Difference in Weight on LE UL was for each landing gear 6.3 oz. versus 18.1 oz with spring. This equates to about 24 oz or 1-1/2 pounds of extra weight total. Springs i used were from McMaster Carr, part number 9573K81 and cost about $ 8.00 each. Springs make a major difference when not landing on smooth surfaces or working on short landings.