castors

hi, basically i got two questions, so here goes the first one. if i have 4 castors that say they can take 70kg each, does this mean that when i screw all 4 castors to the bottom of my cab, is the maximum total load still 70kg? Or do I add up all the castors, making a total maximum load of...

hi guys, does any one know how, or has any one put castors on a pro 211 cab? i want to do so. im thinking about just unscrewing the 4 rubber feet, and using the existing holes to just screw in some wheels. what do you think? any help greatly appreciated!

Hi - quick question, do the Warwick WCA ND 112's come with castors? Thanks.