Window small plastic thingy

[bojangles]

grrr my first broken thing and it is looking like trouble. the passenger window does not work cause there is a small plastic slider on the up down arm ( actually there are 3 in there) and the plasic is broken. Now the arm is not attached to the rail on the glass....

seems the Lotus part is only with the entire window Motor, and grearbox and arms... and costs a fortune..
where can I get the lousy 10 cent plastic bit?
and body got a used motor assembly? or parts car?
let me know