Auto fill problems.

i am a jung/supp main,

I play both roles, and am decent at the other roles, but prefer to play jung or supp.

If i queue up jung/supp i nearly ALWAYS get supp.

It doesnt matter if i supp the last game, somehow i always get supp. maybe 1/5 games ill get my main jung, So if i ever want to play jung, i am FORCED to change my secondary to top mid or adc, and in the unfortunate case i actually get a secondary i didnt want, i usually try to switch with someone, because im not fond of the other roles for competitive play.

Is there any way to make it so im not forced to play supp 80% of the time if im picking it only as a secondary? its really annyoing.