Looking at the manual I see only four (4) 1/4-28 grease fittings total. Anybody undertaken the project of installing additional fittings? If so, what was your solution and final count? Also, were you able to find replacement pins, especially the special ones with welded collar, either through Kubota or some aftermarket source? Seems like greasing through the pin itself would be a simple and effective solution if such pins exist, grease two birds at once, you might say. Thanks in advance.