Back up a bit... Games like that were subject to physical abuse, most likely you would be able to see manifestations of this in bent and cracked steering brackets, PL1 is not wrong, But how we got there should be understood ...stress... Those C/pots absorbed considerable physical energy over time and still may read ok but not-so much in certain positions. (Honeypoo would scope them) but that's just me trying to save the good ones. Because... Here is the thing, they are really hard to find anymore,( the real carbon disk) and when you do quite spendy. The plastic pregged cheapos are junk, Don't waste your time (IMHO).