Will do Pete
Only concern if I measure one of the existing rubbers I don't really know what their original length was as I guess they would have compressed a bit over the years. I'll have to weigh it up.
If the mileage the auctioneers were showing of 19,876 a year ago was accurate, I wouldn't think they would have been too compressed or worn. Having said that, if you think they need attending to, maybe there is another reason? Oil contamination?