Valve float

Yes you read it right, Ive found more problems with some of my parts. the valve springs have a closing force which is less then the requirement for my cam shaft. 150lbs as opposed to 230lbs. This means the missing closing force has to find a place to be made up at, which in the form of valve float. valve float is the valves staying open too long at high RPM because the springs cant close the valves quick enough to ride over on the cam ramps hence the valves dont fully close. were it a stock cam i wouldnt have much problem with it as it would be low duration and realtivly low lift, but at .447 lift (we're talk tenths of an inch here not thousanths) we're watching our street machine chew up a lobe.
Good news, Ive potetnially got a Reputation + as ive Designed an engine for a Real life client of my instructor and hopfully he likes it(400 ft/lbs of torque at low RPM, he Better like it. stump pullers for the win)