i would contact the dealer again and really insist on training-instruction.
it is an investment- and you should receive (as part of the purchase) free instruction to learn to use your set up- if the dealer does not satisfactorly provide customer training contact Thin Lizzy (home office) and report your problem.
they do have good customer service who can talk you through some problems over the phone- they may even send someone else to you depending on availability in your area.
there is no sense putting out that much money to have a dust catcher because you did not recieve proper training- but you need to be the one to initiate-- (they) can not know you need help if you do not contact them.