Original sentence: Achieving some success, he entered a 3-hour long-distance event in April 1978, as before with Australian co-rider Jim Scaysbrook.After the June 1978 TT races, he again rode in Australia with Scaysbrook in the Castrol Six Hour event, followed by the 1979 Adelaide Three Hour race.Hailwood raced at the 1979 Isle of Man TT before retiring for good at the age of 39.In that final Isle of Man appearance, he rode a two-stroke Suzuki RG 500 to victory in the Senior TT.Machines for other race categories were provided by Yamaha NV (Netherlands); Hailwood finished 12th in the 250 cc Junior event, 28th in the 500 cc Senior race and a DNF in the Classic race
Edited sentence: Achieving some success, he entered a 3-hour long-distance event in April 1978, again with Australian co-rider Jim Scaysbrook.After the June, 1978 TT races, he again rode in Australia with Scaysbrook in the Castrol Six Hour event, followed by the 1979 Adelaide Three Hour race.He raced at the 1979 Isle of Man TT before retiring for good at the age of 39.In that final Isle of Man appearance, Hailwood rode a two-stroke Suzuki RG 500 to victory in the Senior TT.Machines for other race categories were provided by Yamaha NV (Netherlands)