I am having problem shifting from 1st to 2nd gear while driving. While in 2nd gear sometimes it sounds like it is slipping out of gear whenever I slow down. No problem shifting in to 3rd and 5th from 1st gear, sometimes I have problem shifting from 3rd to 4th. I have to gentle shift into 4th gear. Please let me know if I can continue driving this vehicle without repairing the transmission?