I have a 1983 Pony Tiller that has an oil leak around the wheel shaft. I have removed the pins and "C" clips from the shaft and can get the left wheel off but not the right. I've soaked it in penetrating oil and will try the tilling suggestion offered in another post to loosen it. I am hopeful I can get the wheel off but what then? Does the shaft just slide out or are there other retaining clips that must be removed? Thanks for any help and advice.