To prevent abrasion of the mast step, tubes or collars of uniform thickness not exceeding 1 mm in total may be placed around the entire circumference of the lower mast or the mast step cavity.
The tape or bushing material may only be used on that portion of the plastic parts that actually slide into the lower section and/or between the upper mast and the collar and it shall be a uniform thickness around the circumference.
Flexible adhesive tape may be applied to the outside of the joint of the upper and lower mast sections to a limit of 40 mm above and below the joint to prevent rotation of the mast sections at the joint.