I don't want to over grease the spindles on my 61" scag tiger cub. I heard you can rupture the seals. The manual calls for grease every 40 hours of use so how many pumps of grease for each spindle on a standard grease gun? I was also told that the spindles have a way to let the excess grease escape before the seals rupture. Any truth to this? Using Red & Tacky #2 Lithium grease from Lucas