Yes you need to check but if the float bowls are sitting level with 10/20 degree spacers fitted it's got to be the wrong one as above! Also technically you need the right jets for the angle as the jet hoses are different lengths and if the wrong length is fitted it will interfere with smooth operation of the choke.
I had this on a car, they where too short and pulled out :-(
Depending on which you have you may be able to simply turn them around.