Just drained the winter coolant out of the rad.The lever on the drain tap moves way too freely from straight ahead and I'm concerned it would not take much of bump to move it and dump the coolant. What's inside and is it DIY repairable? How much trouble is it to get it out? Dont want to crack the housing? I know they are not that expensive but I kind of wanted to get the car on the road rather than wait for a new on to arrive. Thinking of just wrapping the lever in place with plumbers tape as a temporary measure.