That's not quite the story as I've read it, Phil.
John Bowkett had the pumps for the Titan Mohawk made in India, when Titan went belly up there was a batch of pumps left on a shelf in India, so Daystate bought them up and used them to build the Sportsman MK2.
I can believe this as there has been seen to be a working relationship between Mr Bowkett and Daystate in that Daystate made air cylinders for JB.
So the story could run as Tony Belas says, or it could be a combination of cost and using up all the pumps which they'd bought in from India which killed off the Sportsman ?
All the best Mick