Originally Posted by kenchan

calvin- while rolling to a stop at a light, before you completely stop clutch-in and shift into 1st gear (dont clutch-out yet as you will stall) and stop, shift back to N and clutch-out. wat this does is it aligns the collar inside the gearbox to the shifter so that the next time you shift into 1st the collar is already aligned for a smooth entry.

not being able to get the car into 1st (even after warmed up) is not too unusual, as it is just part of the mechanics. but if you follow the simple technique i noted above you should not have issues.