"Jim GM4DHJ ..." wrote in news:RP0QG.517460
:

On 16/07/2020 19:12, Harry Bloomfield wrote:
Andrew laid this down on his screen :
WD40 is junk. Buy a can of spray grease from a motor
factor.

WD40 is absolutely fine for this job, grease will attract dirt and grit.
thought that


Clean tracks and oil on the spring.

I have found that the rollers in the tracks start to skid and then get
flats on them. They would be better with rubber tires!