Brian, he was referring to the Heavy Duty Nose Strut shimmying when facing aft. The HD Strut is supposed to face forward because of the angle of the strut. The HD has a slight angle, where as the normal strut is straight. It you put the HD Strut on backwards it will shimmy, like the front wheels on a grocery cart.
You can check the salvage yards and eBay, but a lot of them are worn to limits, or cracked.
McFarlane [
mcfarlaneaviation.com] has pants with the door, and without
I have looked for used Top Cover Plates and they are scarce, or non-existent.
Hill Aircraft [
cessnaparts.com] has new ones in stock, and they offer a discount on most parts to Club members. Give them a call, tell them you're a member and thank them for their support of the Club and Cessna 150-152 Fly-In