Onepark...I have a few quick things to ask you in regards to your MTT playing.
1. You are playing $2 MTTs, are these Full field or fixed field? ( so are they open to 5000 entrants or are they 180 man MTT SnGs?). There is a big difference to the two of these and the have different times to sqitch gears in. You may just be not switching gears at the right time to acculumate chips during the middle to late stages.
2. Speaking of switching gears, do you play the normal tight early stage, open up middle stage, aggressive bubble stage MTT or something different? The normal style is not nearly as easy as it sounds since you have to take into count the fields dynamic, the table you are at and the level of post flop play you have with poker.
3. Brings me to the level of post flop play you have...are you new enough to poker that you have not developed your post flop play very much? If so, then you will struggle for quite some time with MTTs till you hit a good run of cards during a MTT session. Post flop play is too important when you start getting agressive, which could be the reason why you bubble alot. You might not have the post flop play to make the plays needed to accumulate chips.
4. Do you study your MTTs after you play them? If you do not use HEM or PT3 and mark all your interesting, confused, lost hands for review plus reviewing where you could have increased your chip stake through agressive moves. Then you are just playing MTTs blind and will most likely never really improve.
5. Do you understand the MTT beast as a whole. If you are trying to make 1st every time you play an MTT, the likelyhood that you will not even cash at all is quite a bit higher then if you were going to play MTTs to juts make it in the money. Playing the small margins on hands to chip up will take yoru stake more often, especially if you are new to poker and do not quickly calculate the margins.
Lastly is not a question but a point to make....MTTs are great to score large bits of cash or prizes....but in the long run they take much more time, dedication and studying to master than most of the other formats of poker.