Correct-----Lever can be mounted on the other side.---When box is off the console it takes one screw to swap the lever to the other side.----Box does not need to be taken apart for that simple procedure.------Is the motor running when you shift this control box?----Or is someone turning the prop...
If water birds are diving / feeding on the surface then likely there are bigger fish around.----That is where you throw a line in.-----Nature simply does not need HUMANS with electronics around to do even more damage to dwindling fish stocks.
Just think----Rarely do you get a tip after spending hrs repairing an expensive motor.----That same person will tip the pretty waitress / bartender before the pint is in front of them !-----But I used to get a bonus on occasion before starting work on a motor -.----Fish fillet / moose steak /...
Oil / gas mixtures are not well understood .----Most manuals would say 25:1 on a rebuild..------Hopefully you spent some time lining up the connecting rod caps.
Most folks do not understand.------The motor does not have a warning horn.-----The motor does not have a shutdown on overheat feature.----It would run till it was too late.-----A wise man would install a new impeller !
A newer lower unit had been installed by a previous owner.----They neglected to fit the water pump from the 69 model to this newer unit.----Not everything is --" the same "---year to year.-----Upper bearing housing was round on newer gearcases.---Square on original.