Hi all, my first post here... Nearly 20 years ago I planted an oak in my front garden, a "small" Turner Oak. Since then it has grown into a true beauty. It is now around 8m tall and has a luxuriant canopy spreading around 10m diameter. I would dearly love to let it continue unchecked but there are now two issues. Firstly, the spread has seen it extend over my neighbour's front garden, not that they object. Secondly, now that it is mature and flowering and fruiting annually it's dropping a lot of sticky goop onto our cars. For 3 months each year it's almost pointless cleaning them! So, what do I do? Live with filthy cars or try a fairly drastic pruning? Around 10 years ago I vaguely remember reducing the size of the tree, an act which I think removed ALL foliage at the time. It has since thrived. I have also removed lower boughs in a formative way from time to time, maintaining walking space beneath the canopy. I worry that I was just naive and very lucky during that last potential massacre. How safe, for the tree, would it be to repeat such an exercise? I really don't mind the height but need to get the diameter down by at least a third. Any knowledgeable advice very gratefully accepted.