MJ Transporter Turtle

function SwitchREC()
   if not turtle.attack() then
    print "Couldn't dismantle the Redstone Energy Cell"
    return false
   end
   sleep(1)
   if not turtle.place() then
    print "Couldn't place a Redstone Energy Cell"
    return false
   end
   tries = 0
   while not turtle.suckDown() do
    sleep(1)
    tries = tries + 1
    if tries>10 then
        print "Couldn't get the Redstone Energy Cell from the inventory under me"
        return false
    end
   end
   return true
end

function CheckRefuel()
    if turtle.getFuelLevel() < 5000 then
        print "Refueling"
        turtle.select(2)
        if not turtle.suckUp() then
            print "Couldn't find any (fuel)items in the inventory above me"
            return false
        end
        if not  turtle.refuel() then
            print "Couldn't use the items I got from the inventory above me to refuel"
            return false
        end
        turtle.select(1)
    end
    return true
end

function Tele()
    if not peripheral.call("back", "teleport") then
        print "Teleporting failed"
        return false
    end
    sleep(1)
    return true
end

function WaitUntilFull()
    print "Waiting for a full Redstone Energy Cell"
    while not peripheral.call("right", "get")["Full Energy"] do
        sleep(10)
    end
end

function WaitUntilEmpty()
    print "Waiting for an empty Redstone Energy Cell"
    while not peripheral.call("right", "get")["No Energy"] do
        sleep(10)
    end
end


while true do

    WaitUntilFull()
    if not SwitchREC() then
        break
    end
    if not CheckRefuel() then
        break
    end
    if not Tele() then
        break
    end
    WaitUntilEmpty()
    if not SwitchREC() then
        break
    end
    if not Tele() then
        break
    end
end