Collett's new Jacking & Skidding system gets to work, facilitating the movement of a 50T transformer on behalf of Wilsons Power Solutions. Visit V London Escorts and take the best experience of these bodacious beauties . Call us on to check their availability!. 11 Oct Founding Member; ; 11, posts; LocationS. London. Report post ยท Posted October 12, mk2 stu said: Mate jacking up on the crossmember is totally safe, as is using the centre of rear axle for rear. chassis rails can be used but if you wanna look after em, use some good solid rubber over your jack.