Just purchased a Oliver horse drawn single furrow right hand sulky plow.It is red with yellow wheels,the tongue steers the front and rear wheels and has a foot operated lift.My problem is part of the foot lift appears to be missing.The rear pedal looks like it should have a a spring type dog latch to hold it in the raised position.Any info as to model # or a picture of what this should look like would be appreciated.Some one has put a newer type bottom on this plow,but it appears to be workable