Kamo opening bowler Curtis Cherrington removed David Armitt, Fletcher Coutts and Kurtley Watson before Sam Clotworthy dug in to take the team to lunch with the loss of only one further wicket.
He top-scored with 56, with Matthew Lobb also adding a valuable 25 before tailenders Nick Stobart, Max Davis and Tim Osbaldiston completed the recovery by adding 60 runs between them to see WBHS limp to 182 in 88 overs.
Cherrington eventually finished with 5/37 off 21 overs but Kamo failed to take advantage of their good efforts in the field with the top order folding up on an early season wicket that proved difficult to pick.
Ben Hyde was trapped lbw, Rhys Farrand soon followed and Cherrington failed to add to his good form with the ball when he was caught behind. Leon Cross was unfortunate to be dismissed on the penultimate ball of the day leaving Dylan Clarke and Jacob Cherrington with an uphill battle ahead of them if Kamo is to have a shot at taking first innings points when the match resumes next Saturday.
In the other first-round game at Kensington Park, Kaipara Flats took first innings points against City and will take a 50 run advantage into the second day with one wicket still remaining.