TRAINER Lawrie Fownes has had the start of his five-week stay in Canada ruined by news that Super Bingo II returned a positive swab after his race on the final day at Sha Tin on June 13. The 12-year veteran of the local scene, who came within a length of making it a three-way tie for the trainers' championship, flew to Canada after a holiday in Las Vegas. But within two hours of his arrival he received a telephone call from chief stipendiary stewart, Bernard Hargreaves. ''Super Bingo II was completely clear in his pre-race test, but apparently has come back positive to a form of medication used for circulatory problems. I am not even certain of the name of the medication,'' said Fownes last night. ''There is no suggestion it is a drug which would make a horse go faster or slower, purely a medication,'' he added. Hargreaves was not available for comment last night and senior vet Keith Watkins is on holiday in Indonesia. Fownes says he is so much in the dark he does not know if the medication was administered orally or not. ''It is all very unsettling. I have now had two incidents in two and a half months and nothing in the previous 32 years of training,'' added Fownes. ''It is worse when you are so far away and can talk to virtually nobody in authority about it. I can't get the vet and I don't know how it was given to the horse.'' The trainer was fined $75,000, later reduced on appeal to $40,000, for administering bute to a horse in his stable but not in training and subsequently retired. It is understood that there will be a full investigation into the incident, but it may not take place for some time as virtually all Jockey Club officials are out of town. Super Bingo II, ridden by apprentice K. M. So, finished seventh in a 14-horse field for the Waglan Island Handicap, after which he was sent for routine testing.