If you have all the bearings you could go to a bearing supplier in your area and they should be able to supply you with the bearings. Otherwise you can get in contact with Whaler and if he can't help you ask your local tackle store to order you the bearings.
hey Chey67 speak to craig neil (sealine name Enigma) at CDS angling, he does reel servicing, repairs and upgrades, he'll sort you out no problem. their number is 0126534499