hello i have just got back into caravanning after owning a vw camper for the last 4 years ,i have purchased a bailey discovery s e auvergne with a alko1300 stabiliser fitted which after inspection inside the hitch itself i have found grease (probably used like this by previous owner?) would i be right to think that it needs to be cleaned off and use the hitch grease free .I have matched the unit with a volvo v70 2.0 d and have worked out the towing weights on a towsafe site and they all seem fine any advice would be much appreciated thanks ian