Your cross over tube is another example of why I preach to take nothing for granted and take the engine completely down.
The tube should be shortened so it does not cover the LH supply tube when it is against the stop in the RH fitting. It also should have enough bend that it is held in place once the RH fitting is tightened.
Your oil supply fittings are per OEM. It's not how things were done here in the states but A good supply of sealing washers or the means to make them is a necessity when working on a CS or clone or any other European engine. I dont like your fix but if it holds oil it is hard to argue with.
The dipper in a oil pump equipped engine goes longways, period. The amount of oil moving around inside of the engine is incredible due to the oil coming from the mains running out the throws and being flung every where.. It does not need to be assisted by a sideways mounted dipper. In fact Lister severely limited the oil coming from the longways mounted dipper with a tray mounted between it and the crankshaft that is equipped with a narrow slot. A fact check for the show me crowd (of which I am one
) is to start your engine and let it run for one minute, then shut it down and quickly remove the crank case door. Hint ,have plenty of rags ready to use.
I do not subscribe to the more oil moving cant hurt theory. In fact there is good reason to NOT increase the splash, one being oil consumption past the rings but perhaps larger is the fact that your only means of dirt separation is settlement in the sump.
TRB engines that do not have an oil pump and the associated splash nor the tray under the dipper still do not need a sideways dipper. I have switched every engine that I have ever had my fingers in and a far as I know they are all still running, some every day. The other reason for doing so is sideways mounted dippers are known to break off when the engine is run in cold temps with thick oil.