Proctor D Mast Specification
The Proctor D 505 mast is supplied as standard with a 150mm internal sleeve centred at spreader bracket, a 240 mm internal sleeve centred at deck level, and the standard blue deck collar externally at deck level. I do not understand why your mast has no sleeves as this has been standard for at least 5 years. If it is old stock, please also check that the spreader bracket front part is reinforced around the front by a welded compression bar. (Part number for the reinforced bracket is 024541) and replace if necessary.
Selden Masts Ltd.