Hi Guncollector
You can't convert it to left hand firing as there is no ejection port cut out on the left hand sife of the receiver as there is on the Steyer AUG.
I heard rumers that Enfield would offer a left handed version to other countries but us lefthanders in the British Army had to fire right handed (firing it left handed tends to remove half of yoe teeth the painfull way

)
I had a stopage on the range that was due to a primer blowing out of a fired case and stopping the bolt locking splines form engaging but I would have though that sort of stoppage would glue up almost any weapon.
On excersie I always used Breakfree on my rifle rather that the **** oil that you get from the armory and never had any problems but a lot of people did. As Steven Andrews said that is usually down to bad weapon handling skills rahter than the rifle itself.
It did have problems like magazines falling off as you marched which they sorted by welding on a guard for the release catch.
I have shot a good number of battle/assault rifles and the L85A1 is by far the most accurate I have come across for a standard weapon (not as good as the LSW on its bipod though, I once shot nearly 2500 rounds in one afternoon on a range in Wales and the barrel was glowing red hot but still going- cleaning it was a right BA****d though afterwards)
I was a member of the HQ RAOC TA shooting team in 93 at Bisley and we were looking after the US National Guard team who came over to compete. We had the 4 x optical SUSAT sights for their rifles and we went to one of the ranges at the Royal Military Academy Sandhurst for them to zero them in. One of your Sergeants shot a minute of angle 5 shot group on his second atempt That said a lot for both the shooter and the rifle