Hi, <br /><br />I have 1 1989 Searay 135 v6, its had a rebuild in 2001 and it shows 145 psi on all cylinders,<br />when shes revved she is a dream but when ticking over its lumpy and smokey, also a little hard to start when hot but still does start, my question is , wondered if there was a air mixture srew/screws on the carbs,i was wondering if since the rebuild they may not have been tuned, or if not what else could cause her to idle eraticly and smoke on tick over, shes not chugging with smoke but a little too much i think. many thanks for any response.