Residential & Commercial Security - Locks, Keys & Dead Bolts - Switching a mortise lock from right hand to left hand?

I have a door in my room that if you're facing the door and open it towards you, it swings to the right. I purchased this Hickory Mortise Lock from Lowe's:

Hickory Hardware 1155 Bit Key Mortise Lock (http://www.homedecorhardware.com/hickory-1155.html)

however this lock is designed to open on a door that I guess swings the other way. I tried opening up the mortise lock and reversing the latch, which seems like it should work, however there is a small rise or lip on the inside of the lock that catches it and it gets stuck a lot and doesn't really work. Do they make inexpensive modern mortise locks for doors that open this way? The lock packaging doesn't specify what side lock it is and the instructions don't mention you can reverse the latch, but it would seem to me like this would be a very common issue that a lot of people would have. Thanks for any help.

All I can say, is you get what you pay for. Bit key mortise locks are not so common in the USA and the big box stores usually dont know their foot from their toe.

Many of the cheap foreign made mortise locks of this type are handed and not reversible. The reversible models are usually more expensive.

Then is there a way I can convert it from mortise to a cylinder lock? Like buy a wooden plug for the mortise hole and then drill a new hole or something? I just want to be able to shut the door. Right now it just swings open.

Many locksmiths sell a "wrap-around" plate. It is designed to cover the existing holes and allow for new hardware to go on.

There are multiple manufacturers. Mag Locks, Don-Jo, Major Manufacturing etc.

There are also renovators plates designed to cover the mortise check in so you could install a lever lock or knob lock or even a deadbolt.

All DIY.