I have to agree 100,000% with FF, above. If you wish to see your letters of recommendation, the best way is to ask your recommenders directly. Any other method of pursuing access to the recommendations is more likely to hurt than help.
Frankly, I think that asking recommenders to see their recommendations (if they did not already offer that option to you during the time of the application) suggests that: a) you may have picked the wrong recommenders; and/or b) you already have in mind that the recommendations might have been a weakness in your application (there are, of course, other possibilities which I will not list, here).
If b) is the case, then you already know what should be your next course of action: pick new recommenders for the future; in this scenario, there is little need to ask the old recommenders for a copy of their recommendations.
Furthermore, if you reapply, it would be a good idea to seek new recommenders, anyway, so asking for a copy of the recommendations at this point is likely to yield virtually no positive utility to you.
Apologies if this comes across as being blunt, but I think this is very important to understand and appreciate.
PS - In my opinion, not waiving your right to see the recommendations can do nothing but hurt your case. I strongly recommend that all applicants waive their rights to see the recommendations. If they really want to see the recommendations, they should be able to leverage their presumably good connections and relationships with their recommenders to see those recommendations. Even better would be choosing the right recommenders whom one can trust to write well on one's behalf without monitoring.