Rather than returning home why didn't you immediately return to the shop and ask them why as they had just worked on it..I have a 1985 Honda Rebel 250 cc..Been in the Honda shop lots of new parts. .When I rode it home never cud get it go into 5th gear.All other 4 shift good.Came home 4th gear Not pleasant
It may have been something shop did or didn't do that has caused the problem..